Inking mechanism



A. F. .ZEITINGER INKING MECHANI SM Filed May 1927 a L 3 4 M MUM a 5 H a. 3 w 4 2 J a w 1 m w a :2; a a r; 2

. I r lwervlfot AMI-flour I: 2517713 452 Patented July 3, 1928.

ANTHONY F; ZEITINGER, F sr. LOUIS, MISSOURI.

. mxme MECHANISM.

, Application filed May 7,

This invention pertains to inking mechanism, such as may be used with a rotary ink to such a rotary duplicator at a uniform rate and in accordance with the operation of the duplicator.

Another ob ect is to provide such a device which will maintain a uniform supply of ink and which will avoid excessive inking.

Another object is to provide such a device which will. automatically shut off the flow of ink when the machine is stopped Further objects will appearfrom the following description, taken in. connection with the accompanying drawing, in which Figure 1 is a longitudinal section through the drum of a duplicator equipped with an inking device embodying this invention;

Figure 2 1s a section on hne 22 of Figure 1 Figure 3 is an enlarged detail of the cam movement; and j Figure 4' is a detail ofthe ink roller mount.-

.lng. ,j Referring to the drawing, 1 designates a base upon which the: duplicator may be mounted.v .Upon the base 1. are mounted one or more supports 2, upon which the drum is mounted to rotate. The drum comprises sheet 4 of any suitable type, upon which the stencil may be mounted. Theend frames 3 are carried on a pair of stationary shafts 5 and 6 supported in the supports 2 and se cured thereto against rotation by a pair of a dogs 7.

The inking device embodying this. inven tion is mounted on the shafts 5 and 6 and within the drum. A pair of end brackets 8 and 9 are secured by means of set screws 10 or other suitable fasteningsto the shafts 5 and 6. Mounted on the upper part of the brackets 8 and 9 is a cylindrical ink reservoir 11 having at its lowermost point a port a pair of end frames 3 carrying aperforated 1927. Serial m. 189,594.

12 comprising a slot extending practically the entire length of the cylinder. Mounted within the reservoir 11 is a similar cylinder 13 having a similar port 14: adapted to register in one position with the port 12. The innercylinder 13 is provided with a handle 15 extending through a circumferential slot in the cylinder 11. By means of the handle 15 the inner cylinder 13 may be rotated within the outer cylinder so as to move the port 14 out of registry with the port 12, so as to cut oil the flow of ink.

Joining the brackets 8 and 9, below the ink reservoir, is a housing 16 having a series of ports 17 spaced along said housing and adapted to register with the port 12 of the ink reservoir. The housing 16 is bored to receive a feeder 18, shown cylindrical in shape and provided with a series of circumfcrential grooves 19.. At the lowermost point of the feeder 18 and opposite the grooves 19, a series of short channels 20 are cut transversely of, the feeder. The lowermost part of the housing 16 is provided with a series of ports 2.1 adapted to register in certain positions of the feeder with the channels 20.

The feeder 18 is arranged for endwise slidin g movement in the bore of the housing 16, being guided by one or more keys 22 engaging a slot 23 in the housing 16.

. Thelower ends of the outlet ports 21 are joined by a longitudinal slot 24 in the housiug 16, forming a seat for a capillary pad 42 of felt or other suitable material, which receives the ink from the ports21 and distributes it or spreads it on a distributing roller 25. This roller bears against the interior surface of the drum so as to distribute the ink thereover.

Thefeeder 18 is given a reciprocating endwise movementby the operation of the duplicator. An operating handle 26 on a shaft .27 journaled in one of the supports 2 carries a pinion 28 meshing with a gear 29 adapted to turn on the shaft 5. The gear 29 is secured to one of the end frames 3 and also to a gear 30 within said end frame. The gear 30 meshes with a pinion 31 mounted to rotateon a shaft 32 protruding from the end of the feeder 18. The pinion 31 is secured to a split gear 33, which mesheswith. and drives agear 34 on the shaft of the distributing roller 25. By this train of gearing, the operation of the handle 26 causes thedrum iii to rotate and at the same time causes the distributing roller to roll within the drum.

The reciprocating movement of the feeder 18 is impressed upon it by a cam movement comprising an internal cam groove within the bore of the split gear 33 cooperating with a cam roller 36 on the shaft 32. The gear 33 has secured to it by means of. screws 37 or other suitable fastenings a disc 38 having a beveled rim adapted to cooperate with a correspondingly beveled internal rim on a ring 39 securedby means of screws 40 to the end bracket 8 and housing 16. The disc 38 and ring 39 cooperate to hold the gear 33 stationary as regards axial movement. The rotation of the gear 33 will then cause a reciprocating movement of the shaft 32 and, therefore, of the feeder 18 by the action of thecam groove 35 and the roller 36. The gear 33 is split diametrically so that it may be assembled over the roller 36.

The operation of the device is as follows: The reservoir 11, having been filled with ink through a feed opening ll, the outlet port thereof may be opened by operating the handle 15. Ink will then be" supplied through the ports 17 to the grooves 19. Passing down said grooves, the ink will collect in the transverse channels 20. hen the handle 26 is re ated, the gearing connections will cause the drum to rotate. The gear 30 rotating therewith causes rotation of the gear 33. This latter gear. by the action of the cam groove within it upon the roller 36, im-

rcsses a reciprocating cndwise movement on the feeder 18. This reciprocating movement carries the channels 20 intermittently into registry with the ports 21, whereby ink is supplied to said ports and thcrethrough to the pad in the groove 2i. The pad 4&2, being of capillary material, will cause the ink to distribute throughout the mass thereof so that it will become saturated. This pad spreads ink uniformly over the surface of the distributing roller 25 as the latter rotates, and the roller, in turn, supplies the ink to the interior of the drum.

In order to prevent the inking roller 25 from sticking to the drum when the machine is allowedto stand idle for a time, the lower end of each bracket 8 is provided with a support a3, hinged at ist to the bracket 8, and provided with two bearing recesses, 45 and 46, for the shaft of the roller 25. lVhen placed in the recess 45, the roller engages the drum. Then the machine is to be put out of use, the operator loosens the hinged screws 47, lowers the supports 43 and shiftsthe roller to the bearings 46, which hold it clear of the drum.

It will be seen that the feed is intermittent so that the flow of ink is cut off at regular intervals. The rate of reciprocation of the feeder changes in accordance with the speed at which the drum is driven. Accordingly, the rate of feeding ink will vary in accordance with the operation of the duplicator. Consequently, a uniform'quantity of ink will be fed in accordance with the number of sheets being operated upon.

The adjustment of the gears is such that, whenever the handle 26 comes to its lowermost position, the channels 20 Will be out of registry with the ports 21 forming valves by which the flow of ink will be shut off. Accordingly, it is only necessary for the op erator to stop the machine in this position to be certain that the flow of ink is interrupted and the machine will not continue to feed ink so as to flood the interior of the drum, a difficulty met with in connection with most of the present machines. As the lowermost position of the handle is the one in which a device of this kind would most naturally be stopped, it is practically assured that the feed of the ink will be interrupted whenever the machine is stopped. The supply of ink can also be shutoff completely by operation of the handle 15 to close the port 12.

This inking device forms a unitary structure which may be applied to existing duplicators without any material alteration thereof.

It is obvious that various changes may be made, within the scope of the appended claims, in the details of construction without departing from the spirit of this invention; it is to be understood, therefore, that this invention is not limited to the specific details shown and described.

Having thusdes'cribed the invention, what is claimed is:

1. An inking device for duplicators, com

prising, an ink reservoir, an ink distributing roller, means providing .a series of -ducts spaced along said roller adapted to $11 ply ink thereto, and means joining said' ucts adapted to spread the ink over said roller;

2. An inking device for duplicators, comprising, an ink reservoir, an ink distributing element, means operating in accordance with the operation of the duplicator for feeding ink intermittently from said reservoir, and means for continuously supplying the ink from said feeding means to said element. V V

3. An inking device for duplicators, comprising, an ink reservoir, an ink distributing element, means operating in accordance with the operation of the duplicator for feeding ink intermittently from said reservoir, and capillary means for supplying the ink from said feeding means to saidelement.

4. An inking device for duplicators, comprising, an ink reservoir,an ink distributing element, means operatingin accordance with the operation of the duplicator for feeding ink intermittently from said reservoir, said means being movable to spread the ink, and means for continuously supplying the ink from said feeding means to said element. Y

5. An inking device for duplicators, comprising, an ink reservoir, an ink distributing element, means operating in accordance with the operation of the duplicator for feeding ink intermittently from said reservoir, and a capillary pad adapted to receive the ink from said feeding means and for supplying I the ink from said feeding means to said element.

6. An inking device for duplicator-s, com

prising an ink reservoir, an ink distributceive the ink from said port, a distributing v roller below said feeder and adapted to receive the ink from said duct, a distributing pad between said feeder and said roller and means for intermittently closing said duct.

8. An'inking device for-duplicators, comprising an ink reservoir having an outlet port in the bottom thereof, a feeder below said reservoir having a duct adapted to receive the ink from said port, said feeder having an ink collecting channel at the lower end of said duct, a distributing roller below said feeder and adapted to receive the ink from said duct, and means for moving said feeder adapted to close said duct intermittentl V 9. An in in device for duplicators, comprising, an in reservoir having an outlet port in the bottom thereof, a feeder below said reservoir having a duct adaptedto receive the ink from said port, said feeder having an ink collecting channel at the lower end of said duct, a distributing roller below said feeder and adapted to receive the ink from said duct, a distributing pad between said feeder and said roller and means adapted to oscillate said feeder to close said duct.

10. An inking device for duplicators, comprising, an ink reservoir having an outlet port in the bottom thereof, a feeder having an extended duct adapted to receive ink from said port and terminating in an inkcollecting channel, an inking roller below said feeder, and means for moving said feeder adapted to close said duct intermittently.

11. An inking device for dup-licators, comprising, an ink reservoir having an outlet port in the bottom thereof, a feeder having an extended duct adapted to receive ink from said port and terminating in an inkcollecting channel, an inking roller below said feeder, a distributing pad between said feeder and said roller, and means for moving said feeder adapted to close said duct intermittently.

In testimony whereof I afiix my signature this th day of April, 1927.

ANTHONY F. ZEITINGER. 

